Exlosive-engine.



UNiTnD STATES Patented December 15, 19032.

PATENr OFFICE.

WARREN HIBBARD, CHARLES HIBBARD, AND SUMNER HIBBARD, OF

SANDYHILL, NEW-YORK.

liaxPLoslvis-EnomE..

SPIECFICATION forming part of Letters Patent N o. 746,701., dated December 15, 1903.

Application filed August 13, 1902. Serial No. 119.500. (No model.) 2

To @ZZ whom t ncty con/cern:

. Be it known that we, WARREN HIBBARD, CHARLES HIBBARD, and SUMNER HIBBARD, citizens of the United States, and residents of Sandyhill', in the county of Washington and State of New York, have invented a new and Improved Explosive-Engine, of Which the following is a full, clear, and exact description.

The invention relates to two-cy cle explosiveengines; and its object is to provide certain new and useful improvements in explosiveengines whereby the explosive mixture drives a charge of fresh air into the working cylinder to scour or clean the same of all products of'combustion left by a former explosion, at the same time extinguishing any possible flame whichmay be contained in the working chamber.

A further object of the invention is to provide a mixture which has its component parts regulated according to the work to be performed by the engine.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then point-v ed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a side elevation of the improvement with part of the cylinder in section. Fig. 2 is an enlarged sectional side elevation of the air and gas mixing device, and Fig. 3 is a rear elevation of the same with part in section.

In the cylinder A of the explosive-engine reciprocates in the usual manner a piston B,

connected by pitman land crank with the main driving-shaft of the engine. The upper end of the cylinder A forms the working chamber A',l and the lower end thereof, as well as the crank-casing, forms a compression and storage chamber A2 for the explosive mixture. To one side of the cylinder A is secured an air and gas mixing device C, formed with a channel D, having one end, D, registering with the port ct, opening into the working chamber A' near the lowerend thereof,and the other end, D2, of the channel D registers with the port @extendingthronghthecylinder- Wall to connect with the chamber A2,as plainly indicated in Fig. l. An inwardly opening springpressed air-inlet valve E. is arranged on the top ofthe mixing device C to let air into the channel D near the end D thereof, and in the bottom of the said mixing device C is arranged a gas-inlet valve F for admitting gas into the channel D between the air-inlet valve E and the end D2 of the channel D. The air-inlet valve E is normally held to its seat by a spring vE', and the stem E2 of the said valve is adapted to engage the stem F' of the gas-inlet valve F, so that during the suction period the valve E opens and by its stem E2 causes the valve F to open. Thus air is admitted into the channel D near the end D', and gas is admitted at the same time to the said channel near the end D2, it being understood that a portion of the air admitted passes through the channel in the direction I of the arrow at to mix with the gas from the valve F to finally pass through the portb into the chamber A2. When the valve E closes at the end of the suction period, then that portion of the channel D between the end D' and the valve F is filled with pure air, and

when the piston B is on the working stroke 'gas passing into the perfectly clean working chamber. A pipe G is connected with a suitable gas-supply and delivers the gas to an inlet-valve H under the control 0f the operator, and from which passes the gas in the desired quantity through the valve F into the channel D. In the latter, betweenthe air-inlet valve E and the gas-inlet valve F, is arranged a regulating-valve I, preferably in the shape of a winged valve, to regulate the Thus a charge of pure air.

amount of explosive mixture passing to the Working chamber of the cylinder.

If the work to be performed` by the engine is comparatively light, the valves G and I are set correspondingly to admit a comparatively small and weak mixture to the explosivechamber; but in case the work to be performed by theengine is heavier the said valves G and I are opened more fully to admit a richer and larger quantity of air and gas to the Working chamber of the cylinder. The engine is provided with the usual igniting device (not shown) to ignite the explosive mixture at the proper time in the working chamber.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. An explosive-engine comprising a cylinder, a piston moving therein, a gas-mixing device mounted adjacent to said cylinder, and having channels communicating `therewith, an air-inlet valve for said mixing device, a valve-controlled gas-inlet at the opposite side of the device from the air-inlet, meansconnected with the air-inlet valve and contacting with the gas-in1et valve for opening the latter when the air-valve is opened by the movement of the piston, the construction being such that a charge of pure air will be forced into the working chamber of the cylinder prior to the entrance of the unexploded charge, substantially as set forth.

2. An explosive-engine, provided with a mixing device having a channel connected at one end with the working chamber of the cylinder and at the other end with the storage and compression chamber for the gas and air, an air-inlet in the said channel at or near the entrance of the channel into the Working chamber, and a gas-inlet for the said channel between the compression-chamber and the said air-inlet, devices for opening and closing both the air and the gas inlet simultaneously so that air is forced by the mixture into the working chamber to clean the same of any products of combustion from a previous explosion, previous to the mixture passing into the working chamber, as set forth.

3. An explosive-engine, provided with a mixing device having a channel connected at one end with the Working chamber of the cylinder and at the other end with the storage and compression chamber for the gas and air, an air-inlet in the said channel at or near the entrance of the channel into the working chamber, a gas-inlet for the said channel between the compression-chamber and lthe said air-inlet, so that air is forced by the mixture into .the working chamber to clean the same of any products of combustion from a previous explosion previous to the mixture passing into the working chamber, a valve for regulating the amount of gas passing to the Vsaid gas-inlet, a regulating-valve in the said channel between the air-inlet and the gasinlet, and means for actuating the valve of the gas-inlet to admita charge of gas, simultaneously with the admission of air through the air-inlet, as set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing Witnesses.

WARREN HIBBARD. CHARLES HIBBARD. SUMNER HIBBARD.

Witnesses:

CHAS. S. FENTON, LOUIS E. SExToN. 

